參數(shù)資料
型號： ADC121S021
廠商： National Semiconductor Corporation
英文描述： Single Channel, 500 kSPS, 8-Bit A/D Converter
中文描述： 單通道，500 kSPS的，8位A / D轉(zhuǎn)換器
文件頁數(shù)： 3/20頁
文件大小： 1049K
代理商： ADC121S021
Absolute Maximum Ratings
(Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Analog Supply Voltage V
A
Voltage on Any Pin to GND
Input Current at Any Pin (Note 3)
Package Input Current (Note 3)
Power Consumption at T
A
= 25C
ESD Susceptibility (Note 5)
Human Body Model
Machine Model
Charge Device Modeling (CDM)
Soldering Temperature, Infrared,
10 seconds (Note 6)
Junction Temperature
Storage Temperature
0.3V to 6.5V
0.3V to (V
A
+0.3V)
±
10 mA
±
50 mA
See (Note 4)
2500V
250V
750V
260C
+150C
65C to +150C
Operating Ratings
(Notes 1, 2)
Operating Temperature Range
Supply Voltage, V
A
Reference Voltage, V
REF
Input Common-Mode Voltage,
V
CM
Digital Input Pins Voltage Range
Clock Frequency
Differential Analog Input Voltage
40C
≤
T
A
≤
+85C
+4.5V to +5.5V
+0.1V to 2.5V
See
Figure 1
(Sect 2.3)
0 to V
A
0.8 MHz to 3.2 MHz
V
REF
to +V
REF
Package Thermal Resistance
Package
8-lead MSOP
θ
JA
20C / W
ADC121S625 Converter Electrical Characteristics
(Note 8)
The following specifications apply for V
= +4.5V to 5.5V, V
= 2.5V, f
SCLK
= 0.8 to 3.2 MHz, f
IN
= 20 kHz, C
L
= 100 pF, un-
less otherwise noted.
Boldface limits apply for T
A
= T
MIN
to T
MAX
: all other limits T
A
= 25C.
Symbol
Parameter
Conditions
Typical
Limits
Units
(Note 7)
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes
12
-1.0
±
0.75
±
4
Bits
INL
Integral Non-Linearity
+0.5
0.3
±
0.4
0.4
+0.2
+0.2
-0.05
LSB (max)
LSB (min)
LSB (max)
LSB (max)
LSB
LSB
LSB
DNL
OE
Differential Non-Linearity
Offset Error
Positive Full-Scale Error
Negative Full-Scale Error
Gain Error
DYNAMIC CONVERTER CHARACTERISTICS
SINAD
Signal-to-Noise Plus Distortion Ratio
SNR
Signal-to-Noise Ratio
THD
Total Harmonic Distortion
SFDR
Spurious-Free Dynamic Range
ENOB
Effective Number of Bits
FSE
GE
±
4
f
IN
= 20 kHz, 0.1 dBFS
f
IN
= 20 kHz, 0.1 dBFS
f
IN
= 20 kHz, 0.1 dBFS
f
IN
= 20 kHz, 0.1 dBFS
f
IN
= 20 kHz, 0.1 dBFS
72.6
72.9
84
85.2
11.8
68.5
70
74
74
11.1
dBc (min)
dBc (min)
dBc (max)
dBc (min)
bits (min)
FPBW
3 dB Full Power Bandwidth
Output at 70.7%FS
with FS Input
Differential
Input
Single-Ended
Input
26
MHz
22
MHz
ANALOG INPUT CHARACTERISTICS
V
IN
Differential Input Range
V
REF
+V
REF
±
2
V (min)
V (max)
μA (max)
pF
pF
dB
V (min)
V (max)
I
DCL
DC Leakage Current
±
0.04
17
3
82
C
INA
Input Capacitance
In Track Mode
In Hold Mode
CMRR
Common Mode Rejection Ratio
V
REF
Reference Voltage Range
0.1
2.5
A
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